KR20040002168A - Microwave oven, guide roller, cooking tray and dish - Google Patents

Abstract

PURPOSE: A microwave oven, a guide roller, a cooking tray, and a dish are provided to keep a cooking state uniform without regard to regions of foods to be cooked in the microwave oven, to save energy by shortening cooking time even in generating the same electric power, and to prevent empty containers from being twisted by temperature variation to overheating in the idle of the microwave range. CONSTITUTION: A microwave oven comprises a guide roller(202) arranged to a lower part of a cooking chamber to smoothly rotate foods and a cooking tray(204) put on the guide roller to supply power to the guide roller and rotated with the guide roller to support foods. A high frequency absorbing pad(203) is attached to the lower part of the cooking chamber of the microwave oven, the guide roller, the cooking tray, or a plate.

Description

Microwave Oven, Guide Roller, Support Tray & Plate {MICROWAVE OVEN, GUIDE ROLLER, COOKING TRAY AND DISH}

The present invention relates to a microwave oven, a guide roller, a support tray, and a plate, and to enable a uniform cooking state for the whole food cooked by the microwave oven.

A microwave oven is a cooking appliance that cooks food by frictional heat generated by friction between water molecules by rotating and vibrating water molecules contained in food using high frequency, and the high frequency is generally provided in an electric room of a microwave oven. It is incident on the cooking chamber 101 of the microwave oven through the waveguide from the antenna assembly mounted on the magnetron.

FIG. 1 schematically illustrates a cooking chamber 101 of a conventional microwave oven, that is, a microwave oven. This will be described with reference to the prior art.

One side wall of the cooking chamber 101 is provided with an electromagnetic wave incident part 105 through which high frequency waves propagated from an antenna assembly (not shown) of a magnetron (not shown) are scanned into the cooking chamber 101, and the cooking chamber 101 is provided. The lower portion of the roller guide 102 is provided with a roller 102a to be rotatable with the driving protrusion 104 as a rotating shaft. The roller 102a is partially inserted into the circular groove below the cooking chamber 101. In addition, the guide roller 102 is provided with a support tray 103 for receiving the dish and the support tray 103 is formed with a rotating projection corresponding to the driving protrusion 104. The operation of the conventional microwave oven is as follows.

In general, the user puts food on a plate and puts it on the support tray 103, closes the door (not shown) of the microwave oven, inputs a certain cooking state according to the food, and operates the microwave oven. In this case, a high frequency is injected into the cooking chamber 101 from the magnetron provided in the electric room (not shown) of the microwave oven. In this case, the driving protrusion 104 is fixed at the lower portion of the microwave oven to uniformly cook the food. It rotates with a rotational power, and a constant rotational power is transmitted to the support tray 103 by a rotation protrusion formed on the support tray 103 to correspond to the driving protrusion 104, wherein the rotation with the bottom of the microwave oven is performed. In order to prevent the stop friction and balance the support tray 103, the guide roller 102 with the roller 102a is placed under the support tray 103, so that the support tray 103 is the driving protrusion. It rotates smoothly, making 104 the rotation axis. At this time, the roller 102a attached to the guide roller 102 is inserted into a certain portion of the roller groove formed by being circularly recessed in the lower part of the microwave oven, so that the guide roller 102 has only a rotary motion in place. Accordingly, the food placed on the support tray 103 is able to maintain an even cooking state regardless of each part while rotating at a constant angular speed. Normally, electromagnetic waves can be considered to have complete reflection in the case of conductors, complete transmission in objects such as glass, and absorption in the case of high frequency absorbers such as ferrite, polypropylene, polyphenylene sulfide, Teflon, and polysulfone. .

However, in the conventional microwave oven as described above, the guide roller or the support tray, which is generally composed only of glass components, merely rotates the food and does not have a separate function, and the food is cooked only by the rotation of the food. There is a problem in that the imbalanced cooking of the food has a certain limit in maintaining evenly regardless of each portion of the food.

The present invention is to solve the above-mentioned problems, an object of the present invention is a microwave oven, a guide roller used in a microwave oven, a support dish used in a microwave oven, which is uniformly cooked regardless of each part of the food to be cooked. And to provide a dish.

1 is a view showing a cooking chamber inside a conventional microwave oven.

2 is an exploded perspective view illustrating a disassembled structure of a microwave oven according to an embodiment of the present invention.

3 is a top view of a cooking chamber having a guide roller (GUIDE ROLLER) with a high frequency absorption pad (PAD) is attached in accordance with an embodiment of the present invention.

Figure 4 is a top view of the cooking tray attached to the high frequency absorption pad in accordance with an embodiment of the present invention (COOKING TRAY).

5 is an experimental view showing the state of the potato mash (MASHED PHOTATO) on the support tray to test the effect according to the present invention with coordinates.

* Description of the symbols for the main parts of the drawings *

200: bottom 201: lower part of cooking chamber

202: guide roller 202a: roller

203: high frequency absorption pad 203a: locking portion

204: base plate 204a: rotating protrusion

205: driving projection 206: roller groove

In order to achieve the above object, the present invention is characterized in that the high-frequency absorption pad is provided in the cooking chamber of the microwave oven.

In addition, a high-frequency absorbing pad is attached to the guide roller, the support tray, and the dish provided in the microwave oven or the support tray or the dish for the above purpose.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. For the same configuration, the same reference numerals are used except for the first figure except for the first figure.

First, referring to an exploded perspective view of the interior of the microwave oven according to an embodiment of the present invention, referring to FIG. 2, the bottom 200 of the microwave oven has a rotational power to rotate the food when cooking food in the center of the microwave oven. A driving protrusion 205 is provided, and a circular roller groove 206 having a constant radius is formed around the driving protrusion 205. A certain portion of the roller 202a provided in the guide roller 202 is inserted into the roller groove 206, which is considered to rotate at the same point without changing the rotation axis when the guide roller 202 rotates. The guide roller 202 has a center hole and a disc shaped high frequency absorption pad 203 is attached to and detachably attached to the guide roller 202 by a locking portion 203a. Consideration is given to selectively attaching the high frequency absorption pad 203 to 202. A support tray 204 is placed on the guide roller 202 to place food (not shown) or a plate containing food (not shown), and a lower portion of the support tray 204 corresponds to the driving protrusion 205. The rotating protrusion 204a is formed to receive the rotational force of the driving protrusion 205.

3 is a top view of the lower portion of the microwave oven in which the support tray 204 is removed, and a high frequency absorption pad 203 detachably attached to the guide roller 202 by a catching portion 203a is provided. The configuration of can be observed more clearly. The hooking portion represented in FIG. 3 according to the present invention assumes a hook-shaped hooking portion for a simple drawing configuration, but it is sufficient if the hooking portion is configured as a general detachable structure.

An analysis of the cooking state according to the embodiment of the present invention as described above will be described with reference to FIG. 4.

4 is a flattened plate of yam added with butter, oil, water, and the like (hereinafter referred to as potato mash) on a saucer 204 evenly and placed on a thickness of about 4 cm. The potato mash as described above was tested under the condition that the high-frequency absorption pad is not attached to the guide roller 202 under conditions of an output power of 1174.9 W, a current of 17.76 A, and a microwave operating time of about 10 minutes. The points and numbers indicated at each point of the circles in FIG. 4 represent data at that point, that is, a point at which the temperature of the potato mash 401 is measured. The temperature is expressed in degrees Fahrenheit, the actual experimental data. Experimental data when the experiment as described above is as follows.

number One 2 3 4 5 6 7 8 9 10 Temperature (F) 166.10 173.84 152.24 165.74 161.60 166.46 168.62 163.22 150.80 145.76

number 11 12 13 14 15 16 17 18 19 20 Temperature (F) 147.20 149.18 179.42 177.26 174.92 172.94 184.46 183.38 183.92 181.94

As can be seen from the above data, it can be seen that the temperature at points 5 to 12 has the lowest result and the temperature at points 17 to 20 is the highest. The standard deviation with temperature between these points is 12.9 F, which is a big value, which can make us recognize that the cooking condition varies depending on each part of the food. In other words, it can be seen that the portions of the food at 17 to 20 are cooked quickly while the portions of the food are cooked relatively slowly at 5 to 12. This indicates that in adjusting the microwave operation time for cooking food, portions to be cooked may occur, or overcooked portions may occur according to each portion.

Next, other experimental conditions are maintained in the same state according to the present invention. However, the experimental case after the high frequency absorption pad 203 is attached to the guide roller 202 will be described. Generally, all molds with high heat resistance can be used as high frequency absorption pads. Among them, ferrite, polypropylene, polyphenylene sulfide, teflon, polysulfone, etc. are known to have excellent high frequency absorption effect. Is said to be the best. The high frequency absorption pad used for this experiment was made of polypropylene. The experimental data according to this is as follows.

number One 2 3 4 5 6 7 8 9 10 Temperature (F) 182.12 180.86 170.24 178.70 167.00 169.16 160.52 166.28 171.14 166.28

number 11 12 13 14 15 16 17 18 19 20 Temperature (F) 164.12 167.36 175.82 176.90 183.56 180.50 185.18 185.18 186.62 186.26

As shown in the above data, it can be seen that the temperature at the 5 to 12 point resulted in the lowest and the highest temperature at the 17 to 20 point, but it shows remarkably different data from the previous experiment as follows. First, it can be seen that the temperature at each site rose at almost all points above the values shown in the data from the previous experiments. This means that the cooking time of the food can be shortened when the high frequency absorption pad 203 is attached. Second, the standard deviation according to temperature at each point is 8.4F, which is much smaller than 12.9F shown in the previous experiment. This means that relatively uniform cooking can be achieved regardless of each part of the food.

5 shows that the high frequency absorption pad 203 is attached to the support tray 204 as another embodiment of the present invention. The support tray 204 will not necessarily be attached only to the high frequency absorption pad. It does not matter whether it is provided in the upper surface or the lower surface, or the middle part of the thickness, It is also preferable that the material itself of the support tray 204 is made of a high frequency absorbent material. In addition, a plate that can be placed on the support tray 204 containing food can also be attached to the high-frequency absorption pad to make a uniform cooking of food. Of course, even if the high-frequency absorbing pad is attached to the dish, regardless of the upper surface, the lower surface, etc., the material of the dish itself may be made of a high-frequency absorbent material.

In addition to those described above, those skilled in the art may easily implement the present invention in other forms within the same scope as described above only by the description of the present invention.

As described in detail above, the present invention can maintain a uniform cooking state regardless of the point according to each part of the food cooked in the microwave, and save electric energy due to the shortening of the cooking time even when the same power is output. When the microwave oven is idle, it is possible to prevent the torsion due to the temperature deviation of each part of the empty container due to excessive overheating.

Claims (15)

Microwave oven characterized by providing a high-frequency absorption pad in the cooking chamber. The method of claim 1, The microwave absorption pad is provided in the lower portion of the cooking chamber. The method of claim 2, The lower portion of the cooking chamber is provided with a guide roller for smoothly rotating food, The microwave oven, characterized in that the high-frequency absorption pad is attached to the guide roller. The method of claim 1, The lower portion of the cooking chamber is provided with a guide roller for smoothly rotating the food, It is mounted on the guide roller to provide a rotational power to the guide roller and at the same time rotates with the guide roller and is provided with a support tray for receiving food, Microwave oven, characterized in that the high frequency absorption pad is attached to the support tray. The method of claim 1, A support tray for receiving food is provided below the cooking chamber, Microwave oven, characterized in that the high frequency absorption pad is attached to the support tray. In the microwave oven is provided with a support tray for receiving food in the lower part of the cooking chamber, Microwave oven characterized in that the material of the support tray is a high frequency absorbent. A guide roller is provided at the lower portion of the cooking chamber to smoothly rotate the food, and is placed on the guide roller to provide rotational power to the guide roller and rotate together with the guide roller to support the food tray. To Microwave oven characterized in that the material of the support tray is a high frequency absorbent. In the guide roller used in the microwave to smoothly rotate the food when cooking food by the microwave, The guide roller is characterized in that the high-frequency absorption pad is attached to the guide roller. The method according to claim 1 or 8, The microwave absorption pad of claim 1 or the guide roller of claim 8, wherein the high frequency absorption pad is provided in a detachable structure so as to be detachably coupled according to a selection. In the support tray used in the microwave to support the food when cooking food by the microwave, The support tray is characterized in that the high frequency absorption pad is attached to the support tray. In the support tray used in the microwave to support the food when cooking food by the microwave, The support tray is a support tray, characterized in that the high frequency absorbent material. In the dish which is used to put the food in the cooking tray provided in the microwave when the food is cooked by the microwave, The plate is characterized in that the high frequency absorption pad is attached to the plate. In the dish used to put the food in the microwave oven to put the food when cooking food in the microwave oven, The plate is a material, characterized in that the high frequency absorbent material. The method according to any one of claims 1, 8, 10 and 12, The material of the high frequency absorption pad is made of any one of ferrite, polypropylene, polyphenylene sulfide, Teflon, polysulfone, microwave oven according to claim 1, guide roller according to claim 8, The support tray of Claim 10, or the dish of Claim 12. The method according to any one of claims 6, 7, 11, and 13, The high frequency absorbent is any one of ferrite, polypropylene, polyphenylene sulfide, teflon, polysulfone, microwave oven according to claim 6, microwave oven according to claim 7, claim 11 A tray of the support tray of claim 13 or claim 13.